Superior oxidation resistance Ni-Cr-Fe 70/30 High Temperature
Nichrome Alloy
OhmAlloy118
Common Name: Ni70Cr30, Nikrothal70, N7, HAI-NiCr70, Chromel70/30,
Resistohm70, Balco, Tophet 30, Cronix 70, Alloy 710, Stablohm 710
OhmAlloy118 is a nickel-chromium alloy (NiCr alloy) characterized
byHigh resistivity, good oxidation resistance,very good form
stability,good ductility and excellent weldability. It is suitable
for use at temperatures up to 1250°C.
Typical applications for OhmAlloy118 are used in electrical heating
elements in industrial furnace,and well suited for reducing
atmospheres.
Normal composition%
| C | P | S | Mn | Si | Cr | Ni | Al | Fe | Other |
| Max |
| 0.05 | 0.02 | 0.015 | 0.60 | 0.75~1.60 | 28.0~31.0 | Bal. | Max 0.50 | Max 1.0 | - |
Typical Mechanical properties(1.0mm)
| Yield strength | Tensile Strength | Elongation |
| Mpa | Mpa | % |
| 430 | 820 | 30 |
Typical Physical properties
| Density (g/cm3) | 8.2 |
| Electrical resistivity at 20ºC(ohm mm2/m) | 1.18 |
| Conductivity coefficient at 20ºC (WmK) | 14 |
Coefficient of thermal expansion
| Temperature | Coefficient of Thermal Expansion x10-6/ºC |
| 20 ºC- 1000ºC | 17 |
Specific heat capacity
| Melting point (ºC) | 1380 |
| Max continuous operating temperature in air (ºC) | 1250 |
| Magnetic properties | non-magnetic |
Temperature Factors Of Electrical Resistivity
| 20ºC | 100ºC | 200ºC | 300ºC | 400ºC | 500ºC | 600ºC |
| 1 | 1.007 | 1.016 | 1.028 | 1.038 | 1.044 | 1.036 |
| 700ºC | 800ºC | 900ºC | 1000ºC | 1100ºC | 1200ºC | 1300ºC |
| 1.03 | 1.028 | 1.029 | 1.033 | 1.037 | 1.043 | - |
Style of supply
| Alloys Name | Type | Dimension |
| OhmAlloy118W | Wire | D=0.03mm~8mm |
| OhmAlloy118R | Ribbon | W=0.4~40 | T=0.03~2.9mm |
| OhmAlloy118S | Strip | W=8~250mm | T=0.1~3.0 |
| OhmAlloy118F | Foil | W=6~120mm | T=0.03~0.1 |
| OhmAlloy118B | Bar | Dia=8~100mm | L=50~1000 |
FAQ
1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you
want.
If we do not have, for spool wire, we can produce 1 spool, about
2-3kg. For coil wire, 25kg.
2. How can you pay for small sample amount?
We have account, wire transfer for sample amount also ok.
3. Customer do not have express account. How will us arrange the
delivery for sample order?
Just need to provide your address information, we will check the
express cost, you can arrange the express cost together with sample
value.
4. What's our payment terms?
We can accept LC T/T payment terms, it also depending on delivery
and total amount. Let's talk more in details after getting your
detailed requirements.
5. Do you provide free samples?
If you want several meters and we have stock of your size, we can
provide, customer need to bear the International express cost.
6. What's our working time?
We will give you reply through email/phone Online contact tool
within 24 hours. No matter working day or holidays.
